Re: [Bug #32982] Kernel locks up a few minutes after boot

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Mon, 2011-04-18 at 20:21 +0200, Bart Van Assche wrote:
> On Mon, Apr 18, 2011 at 1:44 PM, Jens Axboe <jaxboe@xxxxxxxxxxxx> wrote:
> > Bart, can you try and pull:
> >
> > git://git.kernel.dk/linux-2.6-block.git for-linus
> >
> > into Linus' tree and see if that works? This has, among other things,
> > Neils fixes for MD.
> 
> md seems to work stable with the resulting tree, but it looks there is
> a performance regression in the block layer not related to the md
> issue. If I run a small block IOPS test on a block device created by
> ib_srp (NOOP scheduler) I see about 11% less IOPS than with 2.6.38.3
> (155.000 IOPS with 2.6.38.3 and 140.000 IOPS with 2.6.39-rc3+).

The mapping code for ib_srp changed in 2.6.39-rc1, but it showed
improved IOPS for a similar setup in my testing so I'd be surprised if
it is the culprit. Still, it wouldn't hurt to check. Do you have time to
try the new ib_srp code with 2.6.38.3 to eliminate it from the equation?

Thanks,
Dave

--
To unsubscribe from this list: send the line "unsubscribe kernel-testers" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html


[Index of Archives]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux